Professor Paul Bloom: Okay. The last class we talked about the brain. Now we're going to talk a little bit about some foundations. So today and Monday we're going to talk about two very big ideas and these ideas are associated with Sigmund Freud and B. F. Skinner and are psychoanalysis and behaviorism. And I want to talk about psychoanalysis today and behaviorism next week. Now, one of these things — One of the things that makes these theories so interesting is their scope. Most of the work we're going to talk about in this class — Most of the ideas are narrow. So, we're going to talk about somebody's idea about racial prejudice but that's not a theory of language acquisition. We'll talk about theories of schizophrenia but they're not explanations of sexual attractiveness. Most theories are specialized theories but these two views are grand theories. They're theories of everything, encompassing just about everything that matters, day-to-day life, child development, mental illness, religion, war, love. Freud and Skinner had explanations of all of these. Now, this is not a history course. I have zero interest in describing historical figures in psychology just for the sake of telling you about the history of the field. What I want to tell you about though is — I want to talk about these ideas because so much rests on them and, even more importantly, a lot of these ideas have critical influence on how we think about the present. And that's there. [pointing at the slide] Now, for better or worse, we live in a world profoundly affected by Sigmund Freud. If I had to ask you to choose a — no, name a famous psychologist, the answer of most of you would be Freud. He's the most famous psychologist ever and he's had a profound influence on the twentieth and twenty-first century. Some biographical information: He was born in the 1850s. He spent most of his life in Vienna, Austria, but he died in London and he escaped to London soon after retreating there at the beginning of World War II as the Nazis began to occupy where he lived. He's one of the most famous scholars ever but he's not known for any single discovery. Instead, he's known for the development of an encompassing theory of mind, one that he developed over the span of many decades. He was in his time extremely well known, a celebrity recognized on the street, and throughout his life. He was a man of extraordinary energy and productivity, in part because he was a very serious cocaine addict, but also just in general. He was just a high-energy sort of person. He was up for the Nobel Prize in medicine and in literature; didn't get either one of them; didn't get the prize in medicine because Albert Einstein — Everybody loves Albert Einstein. Well, Albert Einstein really wrote a letter because they asked for opinions of other Nobel Prizes. He wrote a letter saying, "Don't give the prize to Freud. He doesn't deserve a Nobel Prize. He's just a psychologist." Well, yeah. Okay. While he's almost universally acclaimed as a profoundly important intellectual figure, he's also the object of considerable dislike. This is in part because of his character. He was not a very nice man in many ways. He was deeply ambitious to the cause of promoting psychoanalysis, to the cause of presenting his view and defending it, and he was often dishonest, extremely brutal to his friends, and terrible to his enemies. He was an interesting character.